Embroidering-machine.



Patented June 26, I900.

4 Sheets-Sheet I.

Q I w W. N. PABKES.

EMBROI DERING MACHINE.

(Apphcatlon filed July 21 1897) (No Model.)

WITNESSES:

ATTORNEY E NORRIS PETERS ca, pno'mumoi, WASHINGTON, n, c.

No. 652,326. T

Patented June 26, I900.

W. N. PARKES. EMBRUIDERING MACHINE.

(Application filed July 21, 1897.)

4 SheetsSheet 2.

(No Model.)

huh-inhibi- WITNESSES: v

ATTORNEY Patented June 26, I900.

w. N. PA RKES; EMBROIDERING MACHINE.

(Application filed July 21, 1897.)

ATTORNEY 4 sham-shat 3.

(No Model.)

WITNESSES m: "cams PETERS cu. Plwonxuvr-m.v WASNINGTDNv 04 c.

No. 652,326. Patented 1mm 26, I900.

' W. N. PARKES.

EMBROIDERING MACHINE.

(Application filed July 21, 1897.)

4ShaetsSheet 4.

(No Model.)

5 H. 4 H W IHM @255 J1 2 was 66" ing the needle;

NITED TATES PATENT OFFICE.

WVILLIAM N. PARKES,

on NEW YORK, N. Y.

EMBROlDERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 652,326, dated June 26,1900.. Application filed July 21,1897. Serial No. 645,362. (No model.)

To all whom it may concern.-

Be itknown that 1, WILLIAM N. 'PARKES, a citizen of the United States ofAmerica, and a resident of New York, (Brooklyn,) in the countyof Kingsand State of New York, have. invented a certain new and usefulImprovement in Sewing-Machines, of which the following is aspecification.

My invention has reference to a sewing-machine for automaticallystitching or embroidering doilies, center pieces, and other similarkinds of work.

While my invention is useful in its application to any ordinarysewing-machine, it is especially adapted for that class in which avertically-reciprooating needle is vibrated or moved laterally, andparticularly to that class of machines in which the working position ofthe lateral vibrations of the'needle is automatically moved laterally bymeans of a pattern-cam-such, forinstance, as the machine described inUnited States Patent No. 592,510, granted to me October 26, 1897.

The general object of my invention is to provide a mechanism for movingthe work circularly and also a mechanism'for moving the work across thevertical line of reciprocation of the needle-bar by means of apattern-cam in combination with mechanism for reciproeating and forproducing part or all of the lateral movements of the needle-barreferred to in the above class of machines.

The nature of my invention will best he understood when described inconnection with the accompanying drawings, in which- Figure 1 representsa front elevation of the head of a sewing-machine embodying myinvention. Fig. 2 is a horizontal section on the line 2 2, Fig. 1, partsbeing omitted. Fig. 3 is a view similar to Fig. 2, with part brokenaway, and showing the mechanism complete. Fig. 4 is a horizontalsectionon the line 4 4, Fig. 5. Fig. 5 is a vertical section on the line 5 5,Fig. 4. Fig. 6 is a vertical section on the line 6 6, Fig. 4. Fig. 7 isan enlarged side view showing a detail of the mechanism for vibrat- Fig.8 is an enlarged section on line 10 10, Fig. 1.

Similar letters and numerals of reference designate corresponding partsthroughout the several views of the drawings.

Referring to the drawings, the letter A designates the head of asewing-machine; B, the

driving-wheel; D, the needle holder or bar; 67, the pressure-foot, whichmay be of any usual construction, and F the pivoted needle-bar gate orframe. In the present instance I have shown a zigzag machine of theWheeler (is Wilson pattern, but provided with means for laterallydisplacing the working position of the lateral vibrations of theneedle-bar. The mechanism forming my present invention can be alsoapplied to a sewing-machine having simply a reciprocating needle-bar;but by the use of a machine embodying the features above described agreater variety of stitches can be obtained. On the bed-plate P of themachineismountedaframellwhich isguided to reciprocate across thevertical line of motion of the needle-bar and preferably in thelongitudinal direction of the machine by suitable guides 1. On saidframe is mounted a work-carrier G, which is made annular and guided toturn by a number of rolls 2, having their studs attached to thereciprocating frame E. The fabric to be stitched or ornamented issecured to this annular work-carrier in any usual manner-for instance,by the clamping-rings 3 and 4, which receive the upturned edge of thefabric between them and are wedged into the work carrier. In the presentinstance I have shown the driving mechanism for the frame andwork-carrier to be constructed as follows: To the inner end of theframeE is secured a vertical stud 5, on which is mounted to turn agear-Wheel 6, the hub of which is extended upwardly to near the top ofthe stud. This gear-wheel meshes with a second gear-wheel 7, adapted toturn about a stud S, secured at its lower end in the frame E and at itsupper end in a bracket 9, attached to said frame. This gear-wheel 7meshes with a circular rack 10, formed on the outer periphery of thework-carrier G. On

'the hub of the gear-wheel 6 is rigidly mounted a horizontalratchet-wheel 11, which is engaged by the pawl 12 of a feed-leverl3,adapted to swing about the stud 5 and actuated from the rock-shaft Hof the usual feed mechanism by means of an arm 14 and a link 15. It may,however, be actuated from any other part of the usual feed mechanism orfrom any other suitable moving part of the machine. In this manner thework-carrierisrotated through a predetermined number of degrees for eachstitch of the needle. On the hub of the gear-wheel 6 is mounted a cam18, the roller-stud 19 of which is attached to the overhanging portionof a slide 20, which latter can be adjusted longitudinally or held inthe desired position by a set-screw 21. Below said overhanging portionismounted a second or complementary cam 22, the roller-stud 23 of which islikewise carried by said overhanging portion. As the cams 18 and 22 turnwith the gear-wheel 6, it is evident that a reciprocating motion isimparted to the frame E across the line of vertical reciprocation of theneedle-bar, thus forming, in conjunction with the rotary movement of thework-carrier a scalloped or serrated line of stitches on the fabric. Inplace of the two complementary cams mentioned anysuitable cam can beused. It is evident that as the frame E reciprocates the angle of thelink changes somewhat, and consequently the position of the pawl 12 onits forward stroke will change slightly, although the throw will remainsubstantially the same. An ordinary holding-pawl would under thesecircumstances prove unreliable, and for this reason I substitute for thesame the following device: On the upper end of the stud 5 is formed aneccentric 25, which is encompassed by the hub of a holding-cam 26,adapted to engage with the inner surface of the ratchet-wheel 11. Tothis holding-cam or to an arm projecting from the same is attached aspring 27. Y The eccentric 25 and the holding-cam 26 are so placed thatany tendency on the part of the wheel to move in a direction opposite tothe feed is arrested by the cam binding against the inner periphery of--the ratchet-wheel in view of its eccentric ample consistin a rack 29,formed on one side of theslide 20, which is engaged by a toothedsector-lever 30, pivoted at 31 to the bed-plate P of the machine andprovided at its free end with a clamp 32 for holding it to a graduatedare 33. The graduated are 33 is provided with a series of sockets 34,adapted for the insertion of a pin or pins 35 for holding thesector-lever in any predetermined radial position. By turning the leverto the right the slide is moved to the left, and the circumferencestitched is made longer, and vice versa., By means of the graduationsand pins the frame can be set and held in any desired initialpredetermined position.

In my present application I provide mechanism somewhat different fromthe mechanism employed in my former patent, No. I

592,510, above referred to, for vibrating the needle and changing theworking position of the same laterally. This mechanism consists of alever 37, provided at its lower end with a roller-stud engaging with theusual switch: cam 38, while its upper end is connected by links 39 and39* with one arm of a bell-crank lever 40, having its other armconnected by a link 41 with the needle-bar gate or frame F. The links 39and 39* can turn about a common stud 42, which is connected by a link 43to a stud 44, adapted to be connected either with a vertical stationaryplate (1, attached to the head of the machine, or to a lever 45. Thepivot of the bell-crank lever 40 is attached to the upper end of a lever46, said lever 46 being connected at its lower end to a slide 47, actedupon by a cam 48, to which slide is also attached the lower end of thelever 45. The cam 48 is rotated from the main shaft of the machine by anintermediate usual driving mechanism. Assuming for the present that stud44 is rigidly held to the plate a and the machine started, thevibrations of the lever 37, induced by the switch-cam 38, will raise andlower the stud 42 by means of link 39*, said stud 42 swinging in an arcde scribed from pivot 44 as a center, with link 43 as a radius, and bymeans of link 39 giv ing movement to the end of the horizontal member ofthe bell-crank lever 40, and consequently to the link 41, and therebytransmitt-ing motion to the needle-bar gate or frame F.

' Referring more in detail to the fulcrum of the lever 46, Fig. 8 showsdetails of this fulcrum. is a stud on which the bell-crank lever 40 isfulcrumed. 81 is a slot in the plate a, and 82 is a slot in the upperend of a the lever 46. Through these slots the stud 80 passes. 83 and 84are nuts adapted to be locked on the end of the stud 80, and 85 is a nuton the stud 80 between the plate a and the lever 46, and 86 is a headkeyed on the Stud 80 and held in place on the same by a screw 87. Whenit is desired not to move the working position of the vibrating needle,the nut 85 is held from turning and the stud 80 is turned to the left bymeans of-the head 86. As the stud 80 is threaded, this movement drawsthe nut 85 against the plate a, holding the same in a fixed position onthe plate. When it is desired to move laterally the fulcrum of the lever40 and through it the working position of the lateral vibrations of theneedle, the nut 85 is held from turning and the stud 80 is turned to theright, which fastens the said stud 80 to the lever 46 by reason of thesaid lever being clamped between the nut 85 and the head 86.

Referring more particularly to the lever 37 and its connections with thebell-crank lever 40 and the stud 44, it is noted that in Fig. 7 thislever is shown in one of its extreme lateral positions when the links 39and 39* assume substantially the position shown in this figure. Themeans for connecting the stud 44 to the plate ct or to the lever '45 aresubstantially the same as those shown in Fig. 10 for connecting the stud80 to the plate a or to the lever 46, the only difference being theslots for permitting the movements of the stud 44 are longer, as thelever has more action at its upper end than the lever 46, and for thefurther reason that it is advantageous to have the slots long enoughtopermit of the adjustments of the stud 44 for increasing or decreasingthe extent of the lateral vibrations of the needle.

It is seen that by adjusting the connection of the link 42 through thestud 44 to the right on the lever 45 the links 39 and 39* are broughtaround toward a horizontal position and that, consequently, the extentof the lateral vibration of the needle is increased, and vice versa whenit is adjusted to the left. For example, the lever 37 gets a vibratoryaction from the cam 38, which action is con1- municated to link 39* andthrough it to the stud 42, through the stud 42 to the link 39, andthrough it to the bell crank lever 40, through it to the link 41, and inturn through the link 41 to the needle-bar gate or frame F. If it isdesired to have a uniform vibration of the needle, the stud 44 isattached to the plate a, the slot which is seen in the upper end of thelever 45 permitting the lever to oscillate on its fulcrum withoutaffecting the stud 44 or the link 42. The position of the stud 44 on theplate C6 of course determines the extent of the lateral vibrations ofthe needle. If it is desired when giving the needle a uniform vibratoryaction to increase the extent of the said vibratory action, stud 44 isadjusted to the right on the plate a, and if it is desired to decreasethe extent of the said vibratory action it is of course adjusted to theleft on plate a, a suitable slot being formed in the said plate a,through which the stud 44 is adapted to be adjustably attached, the saidslot serving also asa means for allowing the movements of the stud 44When it is attached to the lever 45. When the stud 44 is attached to thelever 45, which is actuated through the cam 48, it is seen that throughthe connection between the said stud and the needlebar gate F thelateral vibrations of the needle are automatically increased anddecreased.

If now it is desired to produce a number of uniform circular patterns bythe zigzag motion of the needle ora number of uniform scalloped patternsby means of the zigzag motion and the lateral displacement of the zigzagmotion of the needle, the frame E is set and held stationary in thedesired position by means of a setscrew 50, so that no reciprocatingmovement of the frame E takes place, while the set-screw 21 of the slide20 is loosened, so as to permitsaid slide to move under the action ofthe cams. Instead of laterally displacing the position of the lateralvibration of the needle-bar the lateral position of reciprocation oroscillation of the frame E may be correspondingly displaced by simplyconnecting the sector-lever 30 with the slide 47, Fig. 1, by a suitablelever 53 and link 54, as shown in dotted lines in Fig. 1, and bythrowing out of action the mechanism for changing laterally the Workingposition of vibration of the needle. It will be readily understood thatas the slide 47 reciprocates under the influence of cam 48 a likereciprocation is imparted to the frame E. By the displacement of theframe a wider range of displacement can be accomplished without dangerof skipping stitches.

In case the thread breaks and the machine runs ahead a certain distancebefore it is stopped by the operator the work must be turned back ameasured distance, so that the patterns which are the result of themotions of cam 48 and :cams 18 and 22 will again match. Foraccomplishing this I provide means for turning the Work-carrier and cams18 and 22 back through the proper distance to match the pattern made bycam 48. In the present example I have shown these means to consist of alever 54*, carrying a pawl 55, adapted to engage with a ratchetwheel 56,formed on the hub of the ratchetwheel 11, but normally held out ofcontact with the teeth of said ratchet-Wheel bya spring-catch 57. Thelever is normally held against the stop 58 byaspring 59. To readjust thework-carrier and cams in case of breakage of the thread, the operatordisengages pawl 12 of pawl-lever 13 from the ratchet-wheel 11, and it isso held by a springcatch 60, and then releases pawl 55, so as to permitit to engage ratchet-wheel 56. operator then turns the holding-cam 26backwardly to free the ratchet-wheels and moves the lever 54* to and frountil the work-car- The rier and earns 18 and 22 are returned to theproper position. The teeth on ratchet-wheel 56 are proportional to theteeth on ratchetwheel 11, as well as to the teeth of the feedwheel forthe cam 48, and consequently accurate return is assured with the propercalculation.

The feeding mechanism for the frame E and the work-carrier G, as atpresent described, will normally cause concentric cirwork-carrier, isturned to cause a circular displacement of the second circle ofstitching with respect to the first circle of stitching. The amountthrough which the work-carrier is turned can be determined by a seriesof sockets 62, formed in the frame E, and the pin 63, which is set intothe desired socket.

By turning the lever 54? until it engages with the pin the same distanceof movement is always assured.

If more cam action is wanted, different cams are inserted between theroller-studs of the slide 20, or when jaws are used in place of therollers, together with cams which may be shifted eccentrically in ausual manner, the cams can be set according to the action desired. Thelength of the stroke of the feedpawl can be changed to take more or lessteeth at each stroke, thereby bringing the stitches closer together ormaking them farther apart. This may be done by changing the position ofthe usual stitch-regulating lever. In the example illustrated thedrivinggear 6 on stud 5 turns eight times to one revolution of thework-carrier, and as this drivin g-gear carries a heart-shaped cam theworkcarrier is reciprocated laterally eight times at a uniform speedwhile it revolves once. A star-shaped outline with eight points is thusformed. If the drivinggear 6 is replaced by one that turns four timesWhile the work-carrier revolves once, the work-carrier is reciprocatedlaterally four times while it turns once, thus forming a four-pointedfigure. The particular shape will depend upon the throw of the cam. Toillustrate, let it be assumed that a square is drawn within the circleof the work-carrier and the cam is given a throw equal to the distancebetween the center of one of the sides of the square and the circle.Then a corresponding square willbe stitched. If the throw of the cam isincreased, the side of the square will run toward the center and astar-shaped outline is the result. If the throw of the cam is decreased,the sides of the square will bulge out, producing practically anoctagon.

From the above it will be readily understood that each time the ratiobetween the driving-gear and the toothed rack of the workcarrier ischanged the number of lateral displacements of the work-carrierdue tothe cam is varied, and consequently the outline or shape of the designstitched.

By changing the feed of the pawl on the ratchet-Wheel to correspond tothe change in ratio between the driving-gear and the rack on thework-carrier the stitches will remain the same distance apart. Toillustrate, assuming that the driving gear turns eight times while thework-carrier revolves once and a gear turning four times is substitutedfor the driving-gear, then the speed of the work-carrieris doubled andthe stitches would be so much farther apart. To counteract this,thestroke of the pawl is reduced one-half.

What I claim as new is 1. In combination in a sewing-machine, astitch-forming mechanism, comprising a vertically-reciprocatingneedle-bar mounted and adapted to be moved laterally, a rotatingwork-carrier mounted and adapted to move laterally, means for moving thesaid needlebar laterally, and means for moving the said rotatingwork-carrier laterally a predetermined number of times during apredetermined number of lateral movements of the needle-bar,substantially as described.

2. In a sewing-machine having a stitchforming mechanism comprising alaterallymoving needle, and a work-moving mechanism comprising alaterally-moving rotating work-carrier, means adapted automatically tovary the extent of one of said lateral movements with respect to theother of said lateral movements a predetermined number of times duringone rotation of the work-carrier or a portion of said rotation,substantially as described. 7

3. The combination with a sewing-machine having a stitch-formingmechanism comprising a vertically-reciprocating and laterallyvibratingneedle-bar, of a'fran e adapted to reciprocate in the same direction inwhich the needle-bar moves laterally, a work-carrier adapted to rotateon the said frame, and means for reciprocating the said frame and forrotating the work-carrier, substantially as described.

4. The combination with a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally in a plane substantially at right angles to the reciprocationsof said needle, a work-carrier mounted to rotate on said frame, anactuating ratchetwheel, and intermediate mechanism whereby saidwork-carrier is rotated and said frame is reciprocated laterally,substantially as described.

5. The combination with a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally in a plane substantially at right angles to the reciprocationsof said needle, a work-carrier mounted to rotate on said frame,mechanism for automatically imparting a rotary movement to saidwork-carrier and a reciprocating movement to the frame, and means forarresting the reciprocating movement of the frame,substautially asdescribed.

6. The combination with. a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally and a workcarrier mounted on said frame and con-' structed torotate in a plane substantially at right angles to the reciprocations ofsaid needle, a ratchet-wheel carried by the frame, an eccentrically andloosely mounted holdingcam adapted to engage with the ratchetwheel, aspring connected with said holdingcam, and means for rotating theratchetwheel, substantially as described.

7. The combination with a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally in a plane substantially at right angles to the reciprocationsof said needle, a Work-carrier mounted ICC I To

to rotate on said frame, a ratchet wheel mounted on said frame, apawl-lever engagingwith said ratchet-wheel, a feed rock-shaft, anoperative connection between the feed rock-shaft and the feed-lever foractuating the latter, a holding-cam loosely and eccentrically mountedabout the axis of rotation of the feed-wheel and adapted to engage withthe same, a spring for holding said cam in contact with the feedwheel, aslide connected with the bed of the machine and provided with aroller-stud, a cam mounted concentric with the feed-wheel and adapted toengage said roller-stud, and an operative connection between thefeed-wheel and the work-carrier for rotating the latter, substantiallyas described.

8. The combination with a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally, a work-carrier mounted on said frame to rotate in a planesubstantially at right angles to the re ciprocations of said needle, afeed wheel mounted on said frame, a pattern-cam actuated by thefeed-wheel, means for rotating said feed-wheel, and means whereby whensaid feed-wheel is rotated, the frame is reciprocated by saidpattern-cam and the workcarrier rotated, substantially as described.

9. The combination with a sewing-machine having a reciprocating needleand complemental loop engaging device, of a frame mounted to reciprocatelaterally, aworlecarrier mounted on said frame to rotate in a planesubstantially at right angles to the reciprocations of said needle, afeed wheel mounted on said frame, a pattern-cam actuated by thefeed-wheel, means for rotating said feed-wheel, a slide provided with arollerstud engaging with said pattern-cam, means for holding said slidestationary, and means whereby when said feed-wheel is rotated, the frameis reciprocated by said pattern-cam and the work-carrier rotated,substantially as described.

10. In combination in a sewing-maehine, a stitch forming mechanism, awork carrier mounted and adapted to rotate and to move laterally, a cammounted and adapted to move laterally in unison with the saidWork-carrier, means in contact with said cam whereby when the cam isactuated the work-carrier is moved laterally, a ratchet-wheel, meansintermediate the ratchet-wheel and the cam ,the ratchetwheel and thework-carrier whereby when the ratchet-wheel is actuated the cam isactuated and the work-carrier is rotated, substantially as described.

11. In combination in a sewing-machine, a stitch forming mechanism, awork carrier mounted and adapted to rotate and to move laterally, meansfor rotating the Work-carrier, means for moving the work-carrierlaterally comprising a cam, and means for moving the working position ofthe work-carrier laterally consisting of the sector-lever 30, the rack29, the slide 20, and an operative connection between the said slide andthe aforesaid cam, substantially as described.

12. In combination in a sewing-machine, a stitch forming mechanism, awork carrier adapted to rotate and move laterally, means for rotatingthe said work-carrier and for moving the same laterally, means forpredetermining the working position of the said work-carrier consistingof the graduated are 33, the sector-lever 30, the rack 29, and operativeconnections between the said rack and the work carrier, substantially asdescribed.

13. In combination in a sewingnnachine, a work-carrier mounted andadapted to rotate and move laterally, the ratchet wheel 11, meansintermediate the same and the workcarrier whereby when the saidratchet-wheel is actuated the work-carrier is rotated and movedlaterally, means for actuating the said ratchet-wheel, and means adaptedto adjust the saidwork-carrier to a predetermined position with respectto its movements consisting of the lever 5M, the pawl 55 adapted toengage the ratchet-wheel 56,and a connection between the saidratchet-wheel 56 and the aforesaid ratchet 11, substantially asdescribed.

14. In combination in a sewing-machine,.a stitch forming mechanism, awork carrier mounted and adapted to rotate and move laterally, means forrotating and moving laterally said work-carrier comprising two ratchet-Wheels placed in connection with each other, the teeth of saidratchet-wheels inclined in opposite directions, an actuating pawl-lever,

ed to en gage the teeth of either of said ratchetwheels, substantiallyas described.

15. In combination in a sewing-machine, a stitch-forming mechanism,comprising a vertically-reciprocating needle-bar mounted and adapted tomove laterally and means for moving the same laterally, a frame adaptedto reciprocate in substantially the same direction in which theneedle-bar moves laterally, a work-carrier operatively mounted on saidframe, said work-carrier adapted to move the work under the needle in adirection substantially at right angles to the lateral movements of theneedle-bar, means for actuating the Work-carrier, and means adapted toreciprocate the frame a predetermined number of times with respect to apredetermined number of lateral movements of the needle-bar,substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 19th day of July, 1897.

WILLIAM N. PARKES.

Witnesses:

EUGENIE A. PERSIDES, GEORGE W. EISENBAUM.

